Index: Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/PropertyClasses/GrassCoverErosionOutwardsWaveConditionsInputContextPropertiesTest.cs
===================================================================
diff -u -raa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b -r63b0f1800d86c219732bf730d0137e7711b00b47
--- Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/PropertyClasses/GrassCoverErosionOutwardsWaveConditionsInputContextPropertiesTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsInputContextPropertiesTest.cs)	(revision aa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b)
+++ Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Forms.Test/PropertyClasses/GrassCoverErosionOutwardsWaveConditionsInputContextPropertiesTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsInputContextPropertiesTest.cs)	(revision 63b0f1800d86c219732bf730d0137e7711b00b47)
@@ -105,7 +105,7 @@
             Assert.IsNull(properties.ForeshoreProfile);
             Assert.IsNull(properties.WorldReferencePoint);
             Assert.AreEqual(2, properties.Orientation.NumberOfDecimalPlaces);
-            Assert.AreEqual(0, properties.Orientation.Value);
+            Assert.IsNaN(properties.Orientation);
             Assert.IsInstanceOf<UseBreakWaterProperties>(properties.BreakWater);
             Assert.IsInstanceOf<UseForeshoreProperties>(properties.ForeshoreGeometry);
             Assert.AreEqual("Gras", properties.RevetmentType);
Index: Ringtoets/Revetment/src/Ringtoets.Revetment.Data/WaveConditionsInput.cs
===================================================================
diff -u -raa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b -r63b0f1800d86c219732bf730d0137e7711b00b47
--- Ringtoets/Revetment/src/Ringtoets.Revetment.Data/WaveConditionsInput.cs	(.../WaveConditionsInput.cs)	(revision aa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b)
+++ Ringtoets/Revetment/src/Ringtoets.Revetment.Data/WaveConditionsInput.cs	(.../WaveConditionsInput.cs)	(revision 63b0f1800d86c219732bf730d0137e7711b00b47)
@@ -111,7 +111,7 @@
             {
                 if (double.IsNaN(value))
                 {
-                    orientation = new RoundedDouble(2, double.NaN);
+                    orientation = value.ToPrecision(orientation.NumberOfDecimalPlaces);
                     return;
                 }
 
@@ -125,34 +125,6 @@
         }
 
         /// <summary>
-        /// Gets or sets whether <see cref="BreakWater"/> needs to be taken into account.
-        /// </summary>
-        public bool UseBreakWater { get; set; }
-
-        /// <summary>
-        /// Gets the <see cref="BreakWater"/>.
-        /// </summary>
-        public BreakWater BreakWater { get; private set; }
-
-        /// <summary>
-        /// Gets or sets whether the <see cref="ForeshoreGeometry"/> needs to be taken into account.
-        /// </summary>
-        public bool UseForeshore { get; set; }
-
-        /// <summary>
-        /// Gets the geometry of the foreshore.
-        /// </summary>
-        public RoundedPoint2DCollection ForeshoreGeometry
-        {
-            get
-            {
-                return foreshoreProfile != null
-                           ? foreshoreProfile.Geometry
-                           : new RoundedPoint2DCollection(2, Enumerable.Empty<Point2D>());
-            }
-        }
-
-        /// <summary>
         /// Gets the upper boundary based on <see cref="HydraRing.Data.HydraulicBoundaryLocation.DesignWaterLevel"/>.
         /// </summary>
         public RoundedDouble UpperBoundaryDesignWaterLevel
@@ -284,6 +256,34 @@
             }
         }
 
+        /// <summary>
+        /// Gets or sets whether <see cref="BreakWater"/> needs to be taken into account.
+        /// </summary>
+        public bool UseBreakWater { get; set; }
+
+        /// <summary>
+        /// Gets the <see cref="BreakWater"/>.
+        /// </summary>
+        public BreakWater BreakWater { get; private set; }
+
+        /// <summary>
+        /// Gets or sets whether the <see cref="ForeshoreGeometry"/> needs to be taken into account.
+        /// </summary>
+        public bool UseForeshore { get; set; }
+
+        /// <summary>
+        /// Gets the geometry of the foreshore.
+        /// </summary>
+        public RoundedPoint2DCollection ForeshoreGeometry
+        {
+            get
+            {
+                return foreshoreProfile != null
+                           ? foreshoreProfile.Geometry
+                           : new RoundedPoint2DCollection(2, Enumerable.Empty<Point2D>());
+            }
+        }
+
         private static RoundedDouble ValidateUpperBoundaryInRange(RoundedDouble boundary)
         {
             if (boundary > 1000)
@@ -364,7 +364,7 @@
         {
             if (foreshoreProfile == null)
             {
-                Orientation = (RoundedDouble) 0.0;
+                Orientation = (RoundedDouble) double.NaN;
                 UseForeshore = false;
                 UseBreakWater = false;
                 BreakWater = GetDefaultBreakWater();
Index: Ringtoets/Revetment/test/Ringtoets.Revetment.Data.Test/WaveConditionsInputTest.cs
===================================================================
diff -u -raa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b -r63b0f1800d86c219732bf730d0137e7711b00b47
--- Ringtoets/Revetment/test/Ringtoets.Revetment.Data.Test/WaveConditionsInputTest.cs	(.../WaveConditionsInputTest.cs)	(revision aa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b)
+++ Ringtoets/Revetment/test/Ringtoets.Revetment.Data.Test/WaveConditionsInputTest.cs	(.../WaveConditionsInputTest.cs)	(revision 63b0f1800d86c219732bf730d0137e7711b00b47)
@@ -116,7 +116,7 @@
             Assert.AreEqual(new RoundedDouble(2), input.BreakWater.Height);
             Assert.IsFalse(input.UseForeshore);
             CollectionAssert.IsEmpty(input.ForeshoreGeometry);
-            Assert.AreEqual(0, input.Orientation.Value);
+            Assert.IsNaN(input.Orientation);
             Assert.AreEqual(2, input.Orientation.NumberOfDecimalPlaces);
             Assert.IsNaN(input.AssessmentLevel.Value);
             Assert.AreEqual(2, input.AssessmentLevel.NumberOfDecimalPlaces);
@@ -273,7 +273,7 @@
             Assert.IsFalse(input.UseForeshore);
             CollectionAssert.IsEmpty(input.ForeshoreGeometry);
             Assert.AreEqual(originalHydraulicBoundaryLocation, input.HydraulicBoundaryLocation);
-            Assert.AreEqual(0, input.Orientation.Value);
+            Assert.IsNaN(input.Orientation);
             Assert.AreEqual(2, input.Orientation.NumberOfDecimalPlaces);
         }
 
Index: Ringtoets/Revetment/test/Ringtoets.Revetment.Forms.Test/PropertyClasses/WaveConditionsInputContextPropertiesTest.cs
===================================================================
diff -u -raa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b -r63b0f1800d86c219732bf730d0137e7711b00b47
--- Ringtoets/Revetment/test/Ringtoets.Revetment.Forms.Test/PropertyClasses/WaveConditionsInputContextPropertiesTest.cs	(.../WaveConditionsInputContextPropertiesTest.cs)	(revision aa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b)
+++ Ringtoets/Revetment/test/Ringtoets.Revetment.Forms.Test/PropertyClasses/WaveConditionsInputContextPropertiesTest.cs	(.../WaveConditionsInputContextPropertiesTest.cs)	(revision 63b0f1800d86c219732bf730d0137e7711b00b47)
@@ -104,7 +104,7 @@
             Assert.IsNull(properties.ForeshoreProfile);
             Assert.IsNull(properties.WorldReferencePoint);
             Assert.AreEqual(2, properties.Orientation.NumberOfDecimalPlaces);
-            Assert.AreEqual(0, properties.Orientation.Value);
+            Assert.IsNaN(properties.Orientation);
             Assert.IsInstanceOf<UseBreakWaterProperties>(properties.BreakWater);
             Assert.IsInstanceOf<UseForeshoreProperties>(properties.ForeshoreGeometry);
             Assert.AreEqual("Test", properties.RevetmentType);
Index: Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/PropertyClasses/StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs
===================================================================
diff -u -raa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b -r63b0f1800d86c219732bf730d0137e7711b00b47
--- Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/PropertyClasses/StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs	(.../StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs)	(revision aa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b)
+++ Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Forms.Test/PropertyClasses/StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs	(.../StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs)	(revision 63b0f1800d86c219732bf730d0137e7711b00b47)
@@ -112,7 +112,7 @@
             Assert.IsNull(properties.ForeshoreProfile);
             Assert.IsNull(properties.WorldReferencePoint);
             Assert.AreEqual(2, properties.Orientation.NumberOfDecimalPlaces);
-            Assert.AreEqual(0, properties.Orientation.Value);
+            Assert.IsNaN(properties.Orientation);
             Assert.IsInstanceOf<UseBreakWaterProperties>(properties.BreakWater);
             Assert.IsInstanceOf<UseForeshoreProperties>(properties.ForeshoreGeometry);
             Assert.AreEqual("Steen (blokken en zuilen)", properties.RevetmentType);
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Forms.Test/PropertyClasses/StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs
===================================================================
diff -u -raa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b -r63b0f1800d86c219732bf730d0137e7711b00b47
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Forms.Test/PropertyClasses/StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs	(.../StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs)	(revision aa56a5d7a6ec9f083ce3bd7a65d0c5b06470fd3b)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Forms.Test/PropertyClasses/StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs	(.../StabilityStoneCoverWaveConditionsInputContextPropertiesTest.cs)	(revision 63b0f1800d86c219732bf730d0137e7711b00b47)
@@ -112,7 +112,7 @@
             Assert.IsNull(properties.ForeshoreProfile);
             Assert.IsNull(properties.WorldReferencePoint);
             Assert.AreEqual(2, properties.Orientation.NumberOfDecimalPlaces);
-            Assert.AreEqual(0, properties.Orientation.Value);
+            Assert.IsNaN(properties.Orientation);
             Assert.IsInstanceOf<UseBreakWaterProperties>(properties.BreakWater);
             Assert.IsInstanceOf<UseForeshoreProperties>(properties.ForeshoreGeometry);
             Assert.AreEqual("Asfalt", properties.RevetmentType);